Which of the following primarily reflects the opening of voltage-gated Na* channels? A. The resting membrane potential B. The depolarization phase of the action potential C. The threshold potential D. The repolarization phase of the action potential E. All of the above

Q: Transmission of the nerve signal across a synapse is accomplishedby thea. movement of Na+ and K+.b.…

A: Introduction  Neuron/Nerve: A neuron is a single nerve cell which consists of central cell body,…

Q: Which of the following statements about membrane ion channels is incorrect? a. mechanically gated…

A: Ion channels are located in the membrane. They can be voltage-sensitive, ligand-gated, or…

Q: A graded potential that achieves threshold leads to the generation of an action potential. Which one…

A: Graded potentials are made by outside stimuli in sensory neurons or by neurotransmitters discharged…

Q: Put the following in the correct order. A. Neurotransmitter release B. Ca2+ entry into the…

A: Nerve cells called neurons are responsible for sending instructions throughout your body to perform…

Q: During a typical action potential in a nerve, which of the following is happening?  Multiple…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: Match the description with the statement that best describes the following regions e dendrites +…

A: Neuron:

Q: Which of these statements applies to the end plate potential? a. It occurs because of Na+ movement…

A: Introduction Endplate potentials (EPPs) are the voltage potential created at neuromuscular junctions…

Q: Action potentials are normally initiated at the axon hillock because a. there is a particularly high…

A: When the membrane potential of a given cell location rapidly rises and falls, an action potential…

Q: Choose the item in column 2 that best matches each item in column 1…

A: The nervous system of our body is concerned with the functions of sensory reception, processing, and…

Q: The Na+/K+ ATPase pump is a. not required for action potential firing. b. important for…

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride…

Q: Some neurons have very long dendritic arbors. Scientists wanted to understand how synaptic currents…

A: The study of neuronal dendrites and their part in action potential generation is an interesting area…

Q: potential during an action poten were entirely driven by the chanc in the concentration of sodium à…

A: Action potential occurs when a stimulus has to be passed in the form of electrical impulse from one…

Q: Voltage-gated Na+ channels are.... (select all that apply).  Group of answer choices: A. Opened by…

A: The channels are basically membrane proteins that act as transport protein through which various…

Q: Suppose that gated ion channels for Na+or Ca2+ opened in the plasma membrane of a muscle cell.The…

A: The correct option is (d) All of these.

Q: Transmission of the nerve impulse across a synapse isaccomplished bya. the release of Na+ at the…

A: Introduction  Neuron/Nerve: A neuron is a single nerve cell which consists of central cell body,…

Q: Discuss what happens to the action potential shape when the neuronal environment has sodium removed.…

A: Introduction  When the membrane potential of a particular cell site rapidly increases and decreases,…

Q: postsynaptic potential (EPSP) in it. O D. bind to neurotransmitter receptors on the postsynaptic…

A: Synapse is the area of the junction between the two Nerve cells in which the first nerve cell from…

Q: A change in the voltage across a neuron’s plasma membranethat makes the neuron less likely to fire…

A: The neuron is the structural and functional unit of the nervous system. The neuron is also known as…

Q: In signal transduction in the dark, the cGMP plays what role? a. It promotes an action potential…

A: Cyclic GMP (cGMP) is "Guanosine monophosphate" in which the phosphate group is covalently linked to…

Q: Select one: a. increased amount of ATP b. movement of chlorine down its concentration gradient c.…

A: Introduction  Information is transmitted via neurons. They communicate between various brain regions…

Q: Use what you know about the physiology of neurons to answer the following questions. Treat questions…

A: Resting membrane potential is a state in which normally the neuron remains in, when there is no…

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Q: Describe the events that occur during action potential  ANSWER SHOULD INCLUDE: Explanation of how…

A: Action potential is defined as the sudden, fast, propagating change of resting membrane potential…

Q: Neurotransmitters are released from neurons due to the opening of ____________. Select one: a.…

A: Neuron is the sub unit of nervous system. It helps in coordinating the different body parts via…

Q: In a chemical synapse,a. action potentials in the presynaptic terminal cause…

A: An electrical synapse can be described as a type of synapse that contains channel proteins…

Q: Which of these terms is correctly matched with its definition ordescription?a. depolarization:…

A: The cell membrane has a membrane potential associated with it. The electric potential outside the…

Q: During the absolute refractory period (ARF) the voltage-gated sodium channels are mostly in their […

A: The absolute refractory period is the time following an action potential during which no additional…

Q: During the action potential, which of the following activity is LIKELY to occur? Select one: a. Na+…

A: An action potential (AP) occurs in physiology when the membrane potential of a given cell location…

Q: which are Communication between neurons is mediated by rapid changes in propagated along the length…

A:

Q: The inward rectifier does not:   A. Conduct potassium.   B. Carry inward current during the action…

A: Ion channels are transmembrane proteins that can form pores for the passage of ions through the…

Q: The strength of a stimulus is communicated to the Axon terminal button by_ of action potentials a.…

A: DISCLAIMER: Since you have asked multiple questions, we have solved the first question for you. If…

Q: During repolarization, what is the state of the voltage-gated Na+ channels? What about the…

A: Introduction: The brief cascade of changes occurring in membrane potential post excitation is…

Q: Excitatory postsynaptic (EPSP'S) the resting membrane potentials A. have little or no effect b…

A: A current generated in our body in the membranes of the neuron cells. It is due to voltage…

Q: Use this illustration to place these events in the order they occur during synaptic communication:…

A: The above image shows the transmission of nerve impulses across a synapse. A synapse is a small…

Q: locks Na* leak channels - what effect would this have on a neuron's resting al and why? Would this…

A: Sodium leak channels are located on the cell membrane. Because the concentration of sodium ions is…

Q: Which of the following is true about the conduction of action potentials?

A: Generation of Action potential occurs in the axon. The action potential is generated due to opening…

Q: What does a ligand-gated channel require in order to open?a. increase in concentration of Na+ ionsb.…

A: Introduction: Channel proteins make open pores through the cell membrane permitting the appropriate…

Q: Which of the following is the rapid upstroke in the action potential?A. Phase 0B. Phase 1C. Phase…

A: Within the cytoplasm of cells in the heart are specific populations of cells that are specialised…

Q: Summationa. is caused by combining two or more graded potentials.b. occurs at the trigger zone of…

A: The action potential is the temporary shifts in the potential of the neuronal membrane which results…

Q: Post synaptic neurons membrane potentials are less negative than resting membrane potentials when…

A: Post-synaptic neurons are the neurons that receive signals (in the form of neurotransmitters) from…